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nlexa [21]
3 years ago
11

________ is a method used to express extremely large or small numbers in a more practical method. Please watch your spelling.

Mathematics
2 answers:
Aleksandr [31]3 years ago
7 0

We would call it scientific notation

:)

astraxan [27]3 years ago
6 0
The answer is scientific notation
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(15/8+2/5)+(-7/8) show ur work
stepan [7]
The answer is 7/5 th. You can add fractions without first having a common denominator so you would change the 8's by multiplying it by 5 to get 40 and you would multiply the 5 by 8 to get 40 as well. And the rule whatever you do to the bottom you have to do to the top so whatever you multiplied 8 by do the same for the numerator and whatever you multiplied 5 by you do the same for the numerator. So your new equation would be (75/40+16/40)+(-35/40). you would then add the numerator's across to get 56 and the denominator would stay the same so the answer is 56/40. But you have to now simplify 56/40 down to 14/10 and then once more to 7/5 which is the final answer.
6 0
3 years ago
Kristen has 64 coins in her bank. She has $9.25 in dimes and quarters. How many dimes and quarters does she have?
Stella [2.4K]
D= # of dimes
q= # of quarters

QUANTITY EQUATION:
d + q= 64

COST EQUATION:
0.10d + 0.25q= $9.25


STEP 1:
multiply quantity equation by -0.10 to be able to eliminate the d term in step 2

(-0.10)(d + q)= (-0.10)(64)
-0.10d - 0.10q= -6.40


STEP 2:
add equation from step 1 to cost equation to eliminate the d term and solve for q

Add
0.10d + 0.25q= $9.25
-0.10d - 0.10q= -6.40

0.15q= 2.85
divide both sides by 0.15

q= 19 quarters


STEP 3:
substitute q value in step 2 into either original equation to find d value

d + q= 64

d + 19= 64
subtract 19 from both sides

d= 45 dimes


CHECK:
0.10d + 0.25q= $9.25
0.10(45) + 0.25(19)= 9.25
4.50 + 4.75= 9.25
9.25= 9.25


ANSWER: There are 45 dimes and 19 quarters.

Hope this helps! :)
7 0
3 years ago
What would be a model that could be used to describe this situation?
Taya2010 [7]
I confused ! I don't get what your trying to say please explain better !
4 0
3 years ago
Please do 7 and 9 ASAP im on a timed quiz
stira [4]

Answer:

sorry if theyre wrong but i think it is

7) m<4 = x

9) m<1 = 120

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The Elk Grove Bowling Alley offers a special. Each game costs $2.50, and shoe rental $2.
Ksenya-84 [330]

Answer:

5 games

Step-by-step explanation:

5(2.5)=12.50

12.50+2=14.50

5 0
3 years ago
Read 2 more answers
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